davinci: edma: use BIT() wherever possible

This patch replaces occurences of (1 << x) with
BIT(x) as it makes for much better reading.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

diff --git a/arch/arm/mach-davinci/dma.c b/arch/arm/mach-davinci/dma.c
index cc5fcdad9b92c13b6716ab0171718ec02e4cdd8e..1922d461387e360ba4e18466a0f7fafeb99f0f71 100644 (file)
--- a/arch/arm/mach-davinci/dma.c
+++ b/arch/arm/mach-davinci/dma.c
@@ -312,16 +312,16 @@ setup_dma_interrupt(unsigned lch,
 
        if (!callback)
                edma_shadow0_write_array(ctlr, SH_IECR, lch >> 5,
-                               (1 << (lch & 0x1f)));
+                               BIT(lch & 0x1f));
 
        edma_cc[ctlr]->intr_data[lch].callback = callback;
        edma_cc[ctlr]->intr_data[lch].data = data;
 
        if (callback) {
                edma_shadow0_write_array(ctlr, SH_ICR, lch >> 5,
-                               (1 << (lch & 0x1f)));
+                               BIT(lch & 0x1f));
                edma_shadow0_write_array(ctlr, SH_IESR, lch >> 5,
-                               (1 << (lch & 0x1f)));
+                               BIT(lch & 0x1f));
        }
 }
 
@@ -374,7 +374,7 @@ static irqreturn_t dma_irq_handler(int irq, void *data)
                                                        SH_IER, j) & BIT(i))) {
                                /* Clear the corresponding IPR bits */
                                edma_shadow0_write_array(ctlr, SH_ICR, j,
-                                                       (1 << i));
+                                                       BIT(i));
                                if (edma_cc[ctlr]->intr_data[k].callback)
                                        edma_cc[ctlr]->intr_data[k].callback(
                                                k, DMA_COMPLETE,
@@ -423,13 +423,13 @@ static irqreturn_t dma_ccerr_handler(int irq, void *data)
                        for (i = 0; i < 32; i++) {
                                int k = (j << 5) + i;
                                if (edma_read_array(ctlr, EDMA_EMR, j) &
-                                                       (1 << i)) {
+                                                       BIT(i)) {
                                        /* Clear the corresponding EMR bits */
                                        edma_write_array(ctlr, EDMA_EMCR, j,
-                                                       1 << i);
+                                                       BIT(i));
                                        /* Clear any SER */
                                        edma_shadow0_write_array(ctlr, SH_SECR,
-                                                               j, (1 << i));
+                                                               j, BIT(i));
                                        if (edma_cc[ctlr]->intr_data[k].
                                                                callback) {
                                                edma_cc[ctlr]->intr_data[k].
@@ -444,11 +444,11 @@ static irqreturn_t dma_ccerr_handler(int irq, void *data)
                        dev_dbg(data, "QEMR %02x\n",
                                edma_read(ctlr, EDMA_QEMR));
                        for (i = 0; i < 8; i++) {
-                               if (edma_read(ctlr, EDMA_QEMR) & (1 << i)) {
+                               if (edma_read(ctlr, EDMA_QEMR) & BIT(i)) {
                                        /* Clear the corresponding IPR bits */
-                                       edma_write(ctlr, EDMA_QEMCR, 1 << i);
+                                       edma_write(ctlr, EDMA_QEMCR, BIT(i));
                                        edma_shadow0_write(ctlr, SH_QSECR,
-                                                               (1 << i));
+                                                               BIT(i));
 
                                        /* NOTE:  not reported!! */
                                }
@@ -460,9 +460,9 @@ static irqreturn_t dma_ccerr_handler(int irq, void *data)
                         * to just write CCERRCLR with CCERR value...
                         */
                        for (i = 0; i < 8; i++) {
-                               if (edma_read(ctlr, EDMA_CCERR) & (1 << i)) {
+                               if (edma_read(ctlr, EDMA_CCERR) & BIT(i)) {
                                        /* Clear the corresponding IPR bits */
-                                       edma_write(ctlr, EDMA_CCERRCLR, 1 << i);
+                                       edma_write(ctlr, EDMA_CCERRCLR, BIT(i));
 
                                        /* NOTE:  not reported!! */
                                }
@@ -666,7 +666,7 @@ int edma_alloc_channel(int channel,
        }
 
        /* ensure access through shadow region 0 */
-       edma_or_array2(ctlr, EDMA_DRAE, 0, channel >> 5, 1 << (channel & 0x1f));
+       edma_or_array2(ctlr, EDMA_DRAE, 0, channel >> 5, BIT(channel & 0x1f));
 
        /* ensure no events are pending */
        edma_stop(EDMA_CTLR_CHAN(ctlr, channel));
@@ -1204,7 +1204,7 @@ void edma_pause(unsigned channel)
        channel = EDMA_CHAN_SLOT(channel);
 
        if (channel < edma_cc[ctlr]->num_channels) {
-               unsigned int mask = (1 << (channel & 0x1f));
+               unsigned int mask = BIT(channel & 0x1f);
 
                edma_shadow0_write_array(ctlr, SH_EECR, channel >> 5, mask);
        }
@@ -1225,7 +1225,7 @@ void edma_resume(unsigned channel)
        channel = EDMA_CHAN_SLOT(channel);
 
        if (channel < edma_cc[ctlr]->num_channels) {
-               unsigned int mask = (1 << (channel & 0x1f));
+               unsigned int mask = BIT(channel & 0x1f);
 
                edma_shadow0_write_array(ctlr, SH_EESR, channel >> 5, mask);
        }
@@ -1252,7 +1252,7 @@ int edma_start(unsigned channel)
 
        if (channel < edma_cc[ctlr]->num_channels) {
                int j = channel >> 5;
-               unsigned int mask = (1 << (channel & 0x1f));
+               unsigned int mask = BIT(channel & 0x1f);
 
                /* EDMA channels without event association */
                if (test_bit(channel, edma_cc[ctlr]->edma_unused)) {
@@ -1298,7 +1298,7 @@ void edma_stop(unsigned channel)
 
        if (channel < edma_cc[ctlr]->num_channels) {
                int j = channel >> 5;
-               unsigned int mask = (1 << (channel & 0x1f));
+               unsigned int mask = BIT(channel & 0x1f);
 
                edma_shadow0_write_array(ctlr, SH_EECR, j, mask);
                edma_shadow0_write_array(ctlr, SH_ECR, j, mask);
@@ -1337,7 +1337,7 @@ void edma_clean_channel(unsigned channel)
 
        if (channel < edma_cc[ctlr]->num_channels) {
                int j = (channel >> 5);
-               unsigned int mask = 1 << (channel & 0x1f);
+               unsigned int mask = BIT(channel & 0x1f);
 
                pr_debug("EDMA: EMR%d %08x\n", j,
                                edma_read_array(ctlr, EDMA_EMR, j));
@@ -1346,7 +1346,7 @@ void edma_clean_channel(unsigned channel)
                edma_write_array(ctlr, EDMA_EMCR, j, mask);
                /* Clear any SER */
                edma_shadow0_write_array(ctlr, SH_SECR, j, mask);
-               edma_write(ctlr, EDMA_CCERRCLR, (1 << 16) | 0x3);
+               edma_write(ctlr, EDMA_CCERRCLR, BIT(16) | BIT(1) | BIT(0));
        }
 }
 EXPORT_SYMBOL(edma_clean_channel);
@@ -1366,9 +1366,9 @@ void edma_clear_event(unsigned channel)
        if (channel >= edma_cc[ctlr]->num_channels)
                return;
        if (channel < 32)
-               edma_write(ctlr, EDMA_ECR, 1 << channel);
+               edma_write(ctlr, EDMA_ECR, BIT(channel));
        else
-               edma_write(ctlr, EDMA_ECRH, 1 << (channel - 32));
+               edma_write(ctlr, EDMA_ECRH, BIT(channel - 32));
 }
 EXPORT_SYMBOL(edma_clear_event);